Taking lamictal 200 mg, and zoloft (sertraline) 150 mg. will i ever be able to quit? to live without them? can they kill me if i quit, with my doctor observing me?

Increased suffering: You haven't said why you're on the Lamictal & zoloft (sertraline). If bipolar, stopping the Lamictal especially could lead to more mood dysregulation. This does not necessarily mean death, but suicidal urges & attempts can occur. Your doctor would not want anything like this to happen to you, and would likely encourage you to continue the medicine. An open discussion with your doctor may help you both.